stylophora Bleach

[FoxFace Fish]

Okay got back home. Last night it was great perfect bright had all polyps out. Then woke up this morning and it was bleached down to the base. Nothing else is even affected it is all bright and colored like always. (Except my blasto which went into tissue necrosis) What happened

 

[Uncle99]

Age of tank?
What are your parameters?

 

[mcgyvr]

Alk shift?

 

[outssider]

bleached or dead ?? .....white skeleton = death...If there are polyps= bleached